A body of mass 5kg rests on a rough horizontal surface of coefficient of friction 0.2. The body is pulled through a distance of 10m by a horizontal force of 25N. Find the kinetic energy acquired by the body. (g=10ms^(-2))

A body of mass 5kg rests on a rough horizontal surface of coefficient

1.	A body of mass 5kg rests on a rough horizontal surface of coefficient of friction 0.2. The body is pulled through a distance of 10m by a horizontal force of 25N. Find the kinetic energy acquired by the body. (g=10ms^(-2))
Answer» SOLUTION :Mass=5kg, s=10m, u=0, F=25N RESULTANT force : `F^(.)=F-f_(lui)=25-0.2xx5xxg=15N` KINETIC energy=workdone by `F^(.)=15xx10=150J`